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Описание: Rear position lamps (tail lamps)

Double taillights mounted on a road-rail vehicle
Conspicuity for the rear of a vehicle is provided by rear position lamps (also called taillamps or tail lamps, taillights, or tail lights). These are required to produce only red light and to be wired such that they are lit whenever the front position lamps are lit, including when the headlamps are on. Rear position lamps may be combined with the vehicle's stop lamps or separate from them. In combined-function installations, the lamps produce brighter red light for the stop lamp function and dimmer red light for the rear position lamp function. Regulations worldwide stipulate minimum intensity ratios between the bright (stop) and dim (rear position) modes, so that a vehicle displaying rear position lamps will not be mistakenly interpreted as showing stop lamps, and vice versa.

LEDs are gradually coming to be preferred over filament bulbs as the light sources for vehicle rear lamps.

Red steady-burning rear lights, brighter than the rear position lamps, are activated when the driver applies the vehicle's brakes. These are called stop lamps in some countries and brake lights in others. They are required to be fitted in multiples of two, symmetrically at the left and right edges of the rear of every vehicle.[7][18] International UN regulations specify a range of acceptable intensity for a stop lamp of 60 to 185 candela.[18] In North America where the UN regulations are not recognised, the acceptable range for a single-compartment stop lamp is 80 to 300 candela.

Centre high mount stop lamp (CHMSL)

Source: Wikipedia